For the option -blank, we can do disable the text display to save electricity:
--blank [0-60|force|poke] (virtual consoles only)
Sets the interval of inactivity, in minutes, after which the screen
will be automatically blanked (using APM if available). Without an
argument, it gets the blank status (returns which vt was blanked, or
zero for an unblanked vt).
The force option keeps the screen blank even if a key is pressed.
The poke option unblanks the screen.